Toy convertible power shop



Jan. 5, 1965 c. MERL 3,164,177

TOY CONVERTIBLE POWER SHOP Filed July 24, 1962 5 Sheets-Sheet 1 lllHl INVENTOR [4x 4 f/AJPA Jan. 5, 1965 c. MERL 3,164,177

TOY CONVERTIBLE POWER SHOP Filed July 24, 1962 5 Sheets-Sheet 2 I l I INVENTOR. (Ak ME/PL w lP r y, a; w M u m .1 vwuvi avvvwwv g Jan. 5, 1965 MERL 3,164,177

TOY CONVERTIBLE POWER SHOP Filed July 24, 1962 V "/I'All "IL'=,// I.

I N VE NTOR. (4P4 #524 Jan. 5, 1965 c. MERL 3,164,177

TOY CONVERTIBLE POWER SHOP Filed July 24, 1962 5 Sheets-Sheet 4 INVENTOR. (4K1 Mf/PL mo BY M Z Jan. 5, 1965 c. MERL TOY CONVERTIBLE POWER SHOP INVENTOR ,ynuewzy:

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Filed July 24, 1962 United States Patent 3,164,177 TGY CQNVERTELE PGWER Ell-1GP Carl Merl, Erie, Pa, assignor to Louis Marx 81 60., The, New York, NIL, a corporation of New York Filed July 24, 1962, Ser. No. 211,982 12 Claims. ((31. 144-1) This invention relates to toys, and more particularly to a toy convertible power shop.

It has already been proposed to provide toy power tools which operate on a foamed plastic material such as light density Styrofoam. Such material may be cut by tools which are themselves made of a plastics material, and which are driven by a relatively low powered motor operated by flashli ht cells, so that the tools are essentially incapable of injuring a child playing with the toy. Nevertheless products may be made by the child with 'the satisfaction of creative play.

The general object of the present invention is to improve such toy power shops, and to expand the versatility and variety of operations which may be performed on the same, as well as to improve the accuracy and character of the work which may be produced.

The power shop includes a motor head which houses a motor and reduction gearing leading to a power shaft, and it preferably also houses flashlight type battery cells for energizing the motor. The head is tiltably mounted on rigid power head supports or pedestals, so that the power shaft may be disposed either horizontal or vertical. There is also a work table, and in accordance with features and objects of the present invention, the work table may be used with the power shaft horizontal, to drive say a circular saw or a ji saw passing upward through the table. The table also may be used with the power shaft vertical, as for use with a rotary sabre saw or a router. The table again may be used on a lathe tool rest, displaced from the power head, as when sanding, grinding, or buffing.

A further object of the invention is to provide an improved and simple form of motor drive plate or chuck on the power shaft to readily and detachably receive a large variety of tools and accessories, these all having a hub which is received with a snap fit, and the kit including a wrench to facilitate prying a tool off the chuck when desired.

The power shop may be used Without the table, typically as a lathe, and in such case use is made of a tail stock and a tool rest, both slidable on a pair of parallel bed rails. A related object is to afford frictional positioning of the tail stock on bed rails carrying the same. Grinding and drilling also may be performed without the table and without the tail stock.

Other objects are to provide the table with means to detachably receive a jig saw arm, and to receive a table square for accurate straight line cutting.

To accomplish the foregoing objects, and other more specific objects which will hereinafter appear, the invention resides in the toy power shop elements and their relation one to another as are hereinafter more particularly described in the following specification. The specification is accompanied by drawings in which:

FIG. 1 is a perspective view showing a toy power shop embodying features of the invention;

FIG. 2 is a vertical section taken through the power head in the plane of the line 2-2 of PEG. 1;

FIG. 3 is a transverse vertical section taken approximately in the plane of the line 3-3 of FIG. 1;

FIG. 4 is a fragmentary horizontal section taken in the plane of the line 4-4 of FIG. 1;

FIG. 5 is a perspective view showing a piece of work in progress;

FIG. 6 is a vertical transverse section showing the table mounted on the tool rest, and taken approximately in the plane of the line 6-6 of FIG. 1;

FiG. 7 is another vertical section, taken approximately in the plane of the line 7-7 of FIG. 1;

FIG. 7A is a View looking toward the drive plate or chuck of the motor head;

FIG. 7B is a View loo-king toward the inside of the hub of a tool which is received and driven by the chuck of PEG. 7A;

FIG. 8 is a vertical section through the tail stock and bed, taken approximately 0n the line 8-8 of FIG. 1;

FIG. 9 is an end View of the tail stock, looking in the direction of the arrows 9-9 of FIG. 8;

FIG. 10 is a fragmentary section taken in the plane of the line 16-11 of FIG. 8;

FIG. 11 is a section through the bed rails, taken approximately in the plane of the line 11-11 of FIG. 8;

FiG. 12 is a fragmentary section taken approximately in the plane of the line 12-12 of FIG. 10;

PEG. 13 is a perspective view showing tools and accessories used with the power shop;

FIG. 14 is an elevation showing the shop used as a jig saw;

HS. 15 is an elevation looking toward the right end of FIG. 14;

FIG. 16 is a fragmentary elevation similar to FIG. 14, but showing the shop used as a rotary sabre saw;

FIG. 17 shows the use of a cylindrical grinder, the table being unused, and the work being hand held;

FIG. 18 shows how a wrench may be used to pry a tool from the chuck; and

FIG. 19 shows the relation of the parts when the shop is used as a lathe.

Referring to the drawing, and more specifically to FIG. 1, the toy comprises a bed made up of spaced tubular rails 12 and 14 extending horizontally between a base or bed plate 16 and a tail base 18. The base 16 carries power head supports or pedestals 20 and 21 on which a motor head 22 is tiltably mounted. A tail stock 24 is slidable along the rails, and a tool rest 26 is also slidable along the rails. The shop further comprises a horizontal table 30 which may be used in varied ways. In FIGS. 14 and 15 the table 30 is mounted on the motor head 22, with the power shaft in horizontal position. In FIG. 16 the table 3th is again mounted on the power head 22, but with the power shaft in vertical position. In FIG. 1 the table 31} is mounted on the tool rest 2s, and is displaced from the motor head 22. In FIGS. 17 and 19 the table has been removed altogether, it being unnecessary when using the shop as a lathe and for some other purposes.

Referring now to FIGS. 2, 3 and 4, the motor head 22 houses a motor 32, preferably of a permanent magnet field type now commonly used in toys. This drives a power shaft 34 through reduction gearing, in this case a pinion on motor shaft 36 meshing with a gear mounted on the power shaft 34. The other end of the motor head houses flashlight cells to energize the motor, and in the present case there are four cells, two of which are indicated at 40 and 42 in FIG. 2. The end of the housing is closed by a detachable cover 44 held in position by a wire bail 46. The cover includes two spaced vertical resilient metal strips 48 which connect pairs of cells in series, alternate cells being reversed in position, as indicated in FIG. 2. At the forward end the two cells engage a horizontal metal strip, and the other two cells engage appropriate contacts leading to the motor but including also a power switch which is operated by a switch knob indicated at 50 in FIG. 1. The switch serves to close or open the circuit to the motor 32.

The housing of the motor head 22 is preferably molded out of a rigid plastics. material, and includes outwardly with the pedestals.

table by means of four eyelets. the'table may be applied with a snap engagement to the the tubular bed rail. a hole is formed ina two part mold which makes the pedestal and tongues without the need for retractable base. .lock screws $4.

projecting trunnions, indicated at 52 in FIGS. 3 and 4. These trunnions are hollow to save material, and are received in mating bearing holes in the pedestals 2%, 2i, and friction nuts or spring washers may be formed over the trunnions to hold them in assembled relation One or the pedestals, in this case the pedestal 20, has an arcuate slot as which receives a stud Sh te limit the angular motion of the motor head to ninety degrees. The stud 58 is shown in Fl-G. 4, and its relation to the arcuate slot 56 may be seen in FIG. 1.

There is also a means to lock the motor head in either horizontal or vertical position, and referring to FIG. 3, a handle 66) carries a lock pin 62 which is normally urged inward by a compression spring 64, these parts being carried by a bearing 65 molded integrally with the pedestal 2d. The lock pin 62 enters a mating hole in the adjacent side wall of the power head it will be understood that there are two such holes, one for the horizontal position of the motor head, shown in FIGS. 2 and 3, and the other for the vertical position of the motor head shown in FIG. 16, the hole for the vertical posi tion being indicated at 68 in FIGS. 1 and 4. By pulling the ltnob-d outward the head is readily changed to either horizontal or vertical position.

The motor head 22 has duplicate means on two perpendicularly related sides to detachably but fixedly receive the table. In FIG. 1 the means referred to are indicated at 7% and 72. Specifically, there is a rigid ring 76 on the upper side wall of the motor head, and a similar rigid ring '72 on the end wall of the motor head, the latter preferably being concentric with the power shaft 34. The rings have an undercut periphery to receive a mating part of the table with a snap fit.

The underside of the table 36 has a flexible dish 74;

(FIG. 6) with an internally undercut rim '76 dimensioned to mate with the rigid rings 78 and 72, with a snap fit. The dish 74 is made of a pliable or elastic plastics material such as polyethylene, and the flat portion 74 is preferably held and stiffened by means of a sheet metal stiffening plate 78 which is eyeletted to the With this construction motor head, with the table disposed horizontally when the shaft is either horizontal or vertical, and the resilient engagement is dependably maintained.

The table has spaced parallel guides shown at 265? in FIGS. 6 and 7. These closely straddle the sides of the motor head when the table is mounted on the motor .head, and they hold the table in proper orientation.

Referring to FIGS. 2 and 3 the pedestals 2d, 21 are 80, 82 which are near the ends of the stiffening webs 86.

It may be explained that the tongue 80 has a slot which is open toward the right as viewed in FIG. 3, for half its thickness, while the other half thickness has a slot which is open toward the left as viewed in FIG. 3, and that these slots together form a hole dimensioned to snugly receive The efilect of this construction is that cores. The same description applies to tongue 82. The

the pedestal itself serves to help hold the bed rails in the The assembly is completed by the addition of the tail base 18 comprises a top, and a peripheral wall Th2.

It may be reinforced by-a transverse intermediate wall or all] stitlening web the. The inner portion 1% of the peripheral wall may be concaved to clear the lower middle or" the tail stock. Wall and also the transverse wall 164 are cut away to receive the tubular bed rails. To form the desired openings without the need for retractable cores, holes are preferably open at the top, as indicated at 1% in I TG. 12, so that the entire tail piece may be molded between the halves of a simple two-part mold. The tail base is locked on the bed rails by suitable lock screws indicated at 1. 1%. The tail base serves to maintain the desired parallelism of the bed rails 12 and 14, and limits the rearward movement of the tail stock.

The tail stock 24 is molded out of a single body of a suitable plastics material. The main body of the tail stocl; is hollow and U-shaped when viewed in horizontal section, there being spaced side walls 88 (FIGS. 8 and 9) merging into and connected by a rear wall 96. At the bottom the tail stock has spaced tubular portions 92 which are slidable on the bed rails 12 and 14. At the top the tail stock has a horizontal hole 9 which receives the 9d of a comically pointed center or tail stock bearing The tail stool; is preferably molded with an exaggerated between the bottom tubular portions 92. This is d in FiG. 9 by the broken line showing at 92'. "er, the sides 88 may be squeezed together when applying the tail stock to the bed rails, and the resilient spread of the tail stock then holds it frictionaliy in position on the bed rails. Io further locking action is needed, and the child is instructed to squeeze the side walls d8 of the stock toward one another when it is desired to move the tail stool; along the rails. The tail stock then is self locltin g.

While not necessary, if desired an additional friction lock may be provided to prevent rearward movement of the tail stock. As here illustrated, this comprises simply a helically coiled spring wire 19%, the ends of which are so related that they may be squeezed together to relax the grip of the coil on the bedrail lid. The tail stock may be moved up to a piece of work which is to be turned in the lath-e, and the lock spring ltitt then may be moved up to the tail stock to hold it against return movement. When moving the tail stock the sides are squeezed together, and when moving the lock spring the ends are pressed toward one another. Use of the lock spring is optional.

The tool rest 26 is shown in FIGS. 1, 6 and 19. It comprises an upright post 112 stifiened by webs 114. It is carried at its lower end by a transverse strut 116 with stiffening webs 1155, and having tubular parts 120 which are slidable on the bed rails 12 and 14. The rear part additionally has a socket 122 which detachably receives a bent rod support 124, the purpose of which will be described later.

The upright post 112 of the tool rest is expanded at its upper end to provide the actual tool support 126, best shown in FIG. 39 A hand-held cutting tool is held on the portion 126 when turning a piece of work 128 in the lathe, as shown in FIG. 19. The position of the tool rest along the bed rails is not locked, other than by its frictional fit on the bed rails, there being little tendency for it to move except when moved intentionally.

in addition to its normal function as a tool rest, it further serves as an additional means for table support, and thus affords a third position in which the table may be used, this position being shown in FIG. 1 of the drawing. Referring to FTGS. 6 and 7, the table 30 has an elongated recess or socket at 136', dimensioned to receive the upper part 12d of the tool rest. it further has a socket at the rear of the table to receive the stiff bent rod support 12 previously referred to, and the pants 112 and 124 then hold the table 33 in horizontal position, with the table movable along the bed rails toward or away from the power head.

The support 124 is made of a single piece of heavy wire bent to provide a top portion 132, two converging side portions previously designated 124, and two inwardly directed ends 134. The latter are detachably received in the mating socket portion 122, this being done by springing the ends apart when desired.

The horizontal part 132 is detachably received by the table with a snap fit which relies on the resilience of the rod itself. The table has abutments 136 near the ends of the rod 132, and these are notched with openings which face the rear edge 138 of the table. There are slots above them so that they can be undercut to hold the rod 132. At the middle the table has an abutment 140 (FIG. 6) which bends the rod 132 toward the opposite or forward edge of the table. In consequence when the rod is forced into position the three abutments 136 and 140 bend the rod and so hold it tightly in position. Nevertheless the rod is removable from the table, when the table is to be used directly on the motor head as previously described. At such time the support 124 may be laid aside, or it may be left pivoted on the socket 122, it then being turned forward and downward above the horizontal tool rest strut 116.

Referring to FIG. 2 the power shaft 34 carries a chuck generally designated 150. This comprises a rigid die cast plate 144 with a hub 146 secured to the shaft, the latter being fluted to receive the hub 146 with a force fit. The plate 144 further carries a dished member 148 having an undercut rim or flange 152, the dish being molded out of a resiliently yieldable plastics material such as polyethylene. It is secured to the die cast plate 144 as by means of four eyelets 154 (FIG. 7A) bearing against the plate, and each having a metal washer to more securely support the dish. The metal plate 144 is preferably flanged to partly support the dish flange 152. With this construction relatively permanent resilience of the undercut flange 152 is assured.

Each tool and accessory which is to be driven by the motor has a hub portion with an undercut rim dimensioned to be received by the chuck with a snap fit. In FIG. 2 the circular saw 156 has a hub portion 158 with an undercut rim 160. This is rigid, but may be forced into the chuck because of the yieldability of the part 152 of the chuck. When it has been snapped in position it is frictionally gripped, and the tool is turned with the power shaft.

Referring to FIG. 7A, the dish portion 148, 152 of the chuck includes a pair of diametrical lugs 149 on opposite sides of the hub portion 146. Referring neXt to FIG. 7B, the tool hub is hollow and has a pair of pins 162 within the rim 160 previously referred to. It also preferably has a small hollow cylinder 164 dimensioned to be received around the hub portion 146 (FIG. 7A) previously referred to. The drive pins 162 are so located as to bear against the lugs 149 of the chuck, and

thus to assure positive rotation of any tool inserted in the chuck.

An assortment of tools is illustrated in FIG. 13. The circular saw is shown at 156, the hub being at the rear face and therefore not visible in FIG. 13. The saw may be molded in one piece out of a suitable plastics material. Alternate teeth as molded may project slightly toward one side, and the intermediate teeth toward the opposite side, to provide clearance. A' slot is provided, as shown at 166, and every tool has an equivalent slot, the purpose of which may be explained with reference to FIG. 18.

The toy includes a wrench 163 (FIG. 18) having an angularly bent end 171 dimensioned to be received in the tool slot, here shown at 172. When the wrench is inserted through the slot it may be turned to cause the end 170 to bear outward and thus pry the tool from the socket.

' Reverting to PEG. 13, the tool 174 is a sanding disc. A circular piece of sand paper is cemented to a molded plastic disc 176, the latter having a hollow hub with an undercut rim as previously described for the circular saw. A wrench slot is provided at 175.

The tool 178 is a surface grinder, it being molded out of plastics material, and again having on its rear face a hollow hub with an undercut rim as previously described. Again there is a wrench slot.

The tool 180 is a felt buffing disc, the center portion of which is cemented to a molded plastic hub portion, one edge of which is indicated at 182. This hub portion again is hollow and undercut, and provided with drive pins and a center cylinder, all as previously described in connection with FIG. 7B. The felt disc is cut away at 184, in registration with a wrench slot in the hub, as previously described.

The tool 186 is a sabre saw. It is preferably made of metal and is die cast integrally with the hub portion 188, the latter having an undercut periphery 191) which mates with the chuck with a snap engagement. One or more slots are provided for the wrench which pries the tool out of the chuck. The tool shank may be square in section andhas sharp corners. The tip may be pointed, and in any case penetrates the foam plastic material to make an inside cut in sheet material.

The tool 192 is similarly die cast integrally with a hub 1% having an undercut periphery at 196. Here again one or more slots are provided for the wrench 168. The shank in this case is triangular in section, and is larger in section than the tool 186. The edges are sharp, and the tool may be used for quick removal of material.

Tool 198 is a drill which is made of a plastics material, and is molded integrally with hub 2110, which again has an undercut periphery to mate with the chuck. The drill has fluted sides as well as beveled edges at the tip.

The tool 292 is cylindrical with longitudinal grooves around its periphery. It acts as a grinder. It is hollowed at 204, and molded integrally with hub 206 which is received by the chuck. In all of these tools the hollow hub has drive pins like those shown at 162 in FIG. 7B, as well as a centering portion 164.

The part 298 shown in FIG. 13 is a lathe center for the head stock. It has three equally spaced pins 210 i which may be pressed into one end of a bar of the styrofoam material, as indicated at 210 in FIG. 19. The other end of the bar is received on the tail stock center, shown at 98. The lathe center 208 shown in FIG. 13 has an undercut periphery and drive pins, etc., as well as a slot for the wrench, all as previously described.

When material is being worked in the lathe, the tool is hand held. For this purpose a tool holder or handle is provided, which is a simple piece of rather stiff plastics tubing, shown at 214 in FIG. 13. It is dimensioned to receive any of a number of metal lathe tools or bits, indicated at 216, 218 and 220. These are differently shaped, preferably at both ends, thus providing six tool ends. The tool is received with a tight fit in the tool holder 214, and the fit is resilient because the tubing flattens slightly to receive the tool bit, that is, the width of the tool exceeds the internal diameter of the holder when round.

A jig saw is shown at 222, and this is permanently pivotedly connected at 22410 a crank 226. The latter is like one of the hubs previously described; that is, it has an undercut periphery, drive pins, a centering cylinder, and a slot for the Wrench 168.

The jig saw is used as shown in FIGS. 14 and 15. The crank 226 is first pushed into the chuck. The saw blade 222 is passed upward through an elongated saw slot 239 in the table 30 as the saw is snapped into position on the motor head, the latter being in horizontal position. The upper end of the saw blade 222 is then passed through a guide slot in the free or forward end 232 of a jig saw arm 234, the lower end of which has an extension 236 and tongues 238 received in mating slots in the table 30. The

ig saw is then ready for operation.

table 3t).

this time'the work may be hand held, or

This same position of the table is also retained when using the circular saw 1% (PEG. 13). In such case the circular saw is first applied to the chuck, and the table is then snapped in position with the elongated saw slot 23% passing around the top edge of the saw.

To use the sabre saw 185 or the router 192., the motor head is turned to the upright position shown in P16. 16; the tool is applied to the chuck; and the table then added. For this purpose a hole in the center of the table, shown atldil in FIGS. 1 and 6, is passed over the tool, and the yieldable socket flange 76 of the table is snapped over the ring '72 of the power head.

The grinder 282 may be used with the head in upright position, as shown in FIG. 17, but without adding the The edge of the Work is simply hand held against the grinder, and moved as desired.

The flat grinder 178 (FIG. 13), the sanding disc 17d, and the buffing disc 189, are preferably applied to the motor head with the latter in horizontal position. At

may be supported on the table, and for this purpose the table is applied to the tool rest, as shown in FIGS. 1, 6 and '7, and the table and tool rest are moved close to the power head. The work is slid against the tool disc while resting on the table.

For lathe work the table is removed altogether. One end of the work is held by the lathe center 1% with its .three drive pins, the motor head being horizontal. The

tail stock is moved along the bed rails as far as needed to engage and support the work. The tool rest is moved as needed. A tool bit (216, 218, or 22% in FIG. 13) is inserted in the tool holder (214 in FIG. 13), and is rested on the tool rest as it is moved to the work.

The drill 198 is usually used with the motor head in horizontal position. The work may be hand held when moved against the drill, or may be supported against the tail stock for alignment of a long piece.

The table 39 has a shallow straight groove 25%, best shown in FIG. 6. This runs the entire length of the table,

as shown in FIG. '1, and its purpose is to slidably receive the rail of a table square, indicated at 252. FIG. 1 may be misleading inthat the table square is not ordinarily.

used when the table is on the tool rest, as there shown. Its main use is when working with the circular saw, at which time the groove 256 is parallel to the saw blade. A piece of work may. be rested against the head 254 of the table square, the table square and work being moved together as the work is fed to the saw. This results in an accurate saw cut, at right angles to that edge of the work which is resting against the head 254 of the square.

The motor head has a removable disc or cap for inspection and lubrication of the motor and power shaft. This is located inside the anchor ring 70, as shown at 71 in FIG. 3. It is made of polyethylene and is held by friction. It may be pulled out by means of the Wrench used for the tools.

Most of the molded parts of the toy are molded out of high-impact polystyrene. The yieldable portions 74 (PEG. 6) and 143 (FIG. 2) of the table and chuck are made of polyethylene. The tool holder 214 (FIG. 13) is made of a moderately hard polyethylene tubing. The bed rails are made of aluminum tubing. Most of the tools are molded out of high impact polystyrene, but the smaller tools are die cast out of a suitable zinc alloy.

The material supplied with the toy may be sheets of low density Styrofoam, say six inches wide and twelve inches long, some having a thickness of 4 inch and others having a thickness of /2 inch. In addition, square bars which are 6 inches long may be supplied, some being 2 by 2" in section, and others being 1 /2" by 1 in section.

FIG. 5 shows how an intricately curved piece of work may be cut from sheet styrofoarn material. For this purpose the sabre saw may be employed, or if the piece is its 'large in area, so that the curves are gradual, the jig saw might be employed.

it is believed that the construction, operation, and the method of use of the present improved toy power shop, as Well as the advan ages thereof, will be apparent from the foregoing detailed description. it will also be apparent that While I have shown and described the invention in a preferred form, changes may be made without departing from the scope of the invention as sought to be defined in the foiiowiug claims.

Tclaim:

l. A toy convertible power shop comprising a motor head support, a motor head tiltably mounted on said sup port, said motor head having a motor and a power shaft driven thereby, a releasable loci; for locking the motor head with the power shaft either horizontal or vertical, a work table, and duplicate means on two perpendicularly related sides of the motor head to detachably and fixedly receive the table with the table disposed horizontally when the shaft is either horizontal or vertical, said means serving as the sole support for the table in either position of the motor head, said means including a rigid undercut ring, a flexible dish having an undercut rim mating with the ring, and a stiffening plate inside the flexible dish to hold the flat portion of the dish.

2. A toy convertible power shop comprising a motor head support, a motor head tiltably mounted on said support, said motor head having a motor and a power shaft driven thereby, a releasable lock for locking the motor head with the power shaft either horizontal or vertical, a work table, and duplicate means on two perpendicularly related sides of the motor head to detachably and fixedly receive the table with the table disposed horizontally when the shaft is either horizontal or vertical, said means serving as the sole support for the table in eith r position of the motor head, said means including a rigid undercut ring, a flexible dish having an undercut rim mating with the ring, and a stiffening plate inside the dish to hold the fiat portion of the dish, said motor head housing said motor and reduction gearing leading to the power shaft, flashlight cells to energize the motor, and a switch to control the current supply from the cells to the motor.

3. A .toy convertible power shop comprising a motor head support, a motor head tiltably mounted on said support, said motor head housing a motor, reduction gearing leading to a power shaft, flashlight cells to energize the motor, and a switch, a releasable lock for locking the motor head with the power shaft in either horizontal or vertical position, a chuck at the outer end of the power shaft, said chuck being in the form of a flanged disc of large diameter made of a resilient plastics material and having a peripheral undercut to detachably receive any of a variety of tools and accessories having a mating peripheral undercut which mates with the chuck with a snap fit, said tools and accessories having a hole to receive a wrench with a bent end suitable to pry the same from the chuck.

4. A toy convertible power shop comprising a motor head support, a motor head tiltably mounted on said support by means of trunnions received in the support, said motor head housing a motor, reduction gearing leading to a power shaft, flashlight cells to energize the motor, and a switch, a releasable lock for locking the motor head with the power shaft in either horizontal or vertical position, a chuck at the outer end of the power shaft, said chuck being in the form of a flanged dish of large diameter having a peripheral undercut to detachably receive any of a variety of tools and accessories having a mating peripheral undercut which mates with the chuck with a snap fit, said tools and accessories having a hole to receive a wrench with a bent end to help pry the same from the chuck, said flanged dish being made of a flexible plastic material and having a stiiiening means inside the dish to hold the flat portion of the dish.

5. A toy convertible power shop as defined in claim 1, in which the table has a groove to slidably receive a table square to facilitate cutting on a straight line.

6. A toy convertible power shop as defined in claim 1, in which the table has a slot for passage therethrough of a circular saw or a jigsaw, and has a hole for passage therethrough of a router or a rotary sabre saw.

7. A toy convertible power shop as defined in claim 1, in which the table has a slot for passage therethrough of a circular saw or a jig saw, and has a hole for passage therethrough of a router or a rotary sabre saw, and has a groove to slidably receive a table square to facilitate cutting on a straight line, and has a socket at one edge in alignment with the aforesaid slot to receive an overhanging arm for use with a jig saw.

8. A toy convertible power shop as defined in claim 1, in which one of said rings is concentric with the power shaft.

9. A toy convertible power shop as defined in claim 1, in which the motor head support is fixedly mounted at one end of a bed, and in which a tail stock is slidable along said bed, and in which an upright tool rest for lathe tools is slidable along said bed, and in which the table has means mating with the tool rest to provide a support for the table, which support is alternative to the support provided by the motor head.

10. A toy convertible power shop as defined in claim 2, in which the motor head support is fixedly mounted at one end of a bed, and in which a tail stock is slidable along said bed, and in which an upright tool rest for lathe tools is slidable along said bed, and in which the table has means mating with the tool rest to provide a support for the table, which support is alternative to the support provided by the motor head.

11. A toy convertible power shop as defined in claim 2, in which the motor head support is fixedly mounted at one end of a pair of parallel bed rails, and in which a tail stock is slidable along said bed rails, and in which an upright tool rest for lathe tools is slidable along said bed rails, and in which the table has a socket dimensioned to receive the upper end of the tool rest, and in which the base of the tool rest pivotally carries an additional bent wire support for the table, said table having a socket to receive the additional bent wire support.

12. A toy convertible power shop comprising a motor head support, a motor head tiltably mounted on said support and having a motor and power shaft driven thereby, whereby the power shaft may be disposed either horizontally or vertically, a work table, duplicate means on two perpendicularly related sides of the tiltable motor head to detachably and fixedly receive the table with the table disposed horizontally when the shaft is either horizontal or vertical, said means then serving as the sole support for the table in either position of the motor head, a pair of parallel bed rails, said motor head support being fixedly mounted at one end of said bed rails, a tail stock slidable along said bed rails, an upright tool rest for lathe tools slidable along said bed rails, said table having a socket dimensioned to receive the upper end of the tool rest, the base of the tool rest pivotally carrying an additional bent wire support for the table, and said table having a socket to receive said bent wire support.

References (Cited by the Examiner UNITED STATES PATENTS 1,474,323 11/23 Gaibel 143 1,789,398 1/31 Aubertin 144 1.3 2,157,241 5/39 Manning.

2,200,799 5/40 Miller 144 1.3 XR 2,364,396 12/44 Stahler 144 1.3XR 2,722,243 11/55 Nagy 143 132.2 2,829,285 4/58 Steiner et a1. 46- 39 XR 2,8841'027 4/59 Pulera et al. 143--1.1XR 2,905,211 9/59 Weinstein 144 1.3 2,991,596 7/61 Walters 144 1.3 3,011,533 12/61 Newman 144 1.3 3,066,437 12/62 Cohn 46-39 3,071,889 1/63 Silver 46-39 FOREIGN PATENTS 669,905 8/29 France.

LESTER M. SWINGLE, Primary Examiner.

EARL EMSHWILLER, WILLIAM W. DYER, 1a.,

Examiners. 

1. A TOY CONVERTIBLE POWER SHOP COMPRISING A MOTOR HEAD SUPPORT, A MOTOR HEAD TILTABLY MOUNTED ON SAID SUPPORT, SAID MOTOR HEAD HAVING A MOTOR AND A POWER SHAFT DRIVEN THEREBY, A RELEASABLE LOCK FOR LOCKING THE MOTOR HEAD WITH THE POWER SHAFT EITHER HORIZONTAL OR VERTICAL, A WORK TABLE, AND DUPLICATE MEANS ON TWO PERPENDICULARLY RELATED SIDES OF THE MOTOR HEAD TO DETACHABLY AND FIXEDLY RECEIVE THE TABLE WITH THE TABLE DISPOSED HORIZONTALLY WHEN THE SHAFT IS EITHER HORIZONTAL OR VERTICAL, SAID MEANS SERVING AS THE SOLE SUPPORT FOR THE TABLE IN EITHER POSITION OF THE MOTOR HEAD, SAID MEANS INCLUDING A RIGID UNDERCUT RING, A FLEXIBLE DISH HAVING AN UNDERCUT RIM MATING WITH THE RING, AND A STIFFENING PLATE INSIDE THE FLEXIBLE DISH TO HOLD THE FLAT PORTION OF THE DISH. 